gusset

A triangular insert, as in the seam of a garment, for added strength or expansion.

A triangular metal bracket used to strengthen a joist.

A piece of mail or plate armor protecting the joints in a suit of armor.

Origin of gusset

Middle English piece of mail protecting the armpitfrom Old French goussetfrom diminutive ofgoussepod of a legume, clove of garlicprobably from or akin to Old Provençcal gossafeminine ofgosdog ( for the semantic development, compare French caïeuclove of garlic ) ( ultimately from Latin catelluspuppy ) ( and English pupoffset from a cactus or banana plant ) akin to Catalan gus Occitan guss guss Spanish cuz sounds made to call a dog